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High/Low Temperature Hazard - Wear protective clothing when handling
equipment at extremes of temperature.
Materials testing is often carried out at non-ambient temperatures using ovens, furnaces
or cryogenic chambers. Extreme temperature means an operating temperature exceeding
60 °C (140 °F) or below 0 °C (32 °F). You must use protective clothing, such as gloves,
when handling equipment at these temperatures. Display a warning notice concerning
low or high temperature operation whenever temperature control equipment is in use.
You should note that the hazard from extreme temperature can extend beyond the
immediate area of the test.
Hazard - Do not place a testing system off-line from computer control without first
ensuring that no actuator or crosshead movement will occur upon transfer to
manual control.
The actuator or crosshead will immediately respond to manual control settings when the
system is placed off-line from computer control. Before transferring to manual control,
make sure that the control settings are such that unexpected actuator or crosshead
movement cannot occur.
Robotic Motion Hazard - Keep clear of the operating envelope of a robotic device
unless the device is de-activated.
The robot in an automated testing system presents a hazard because its movements are
hard to predict. The robot can go instantly from a waiting state to high speed operation in
several axes of motion. During system operation, keep away from the operating envelope
of the robot. De-activate the robot before entering the envelope for any purpose, such as
reloading the specimen magazine.
Hazard - Set the appropriate limits before performing loop tuning or running
waveforms or tests.
Operational limits are included within your testing system to suspend motion or shut off
the system when upper and/or lower bounds of actuator or crosshead travel, or force or
strain, are reached during testing. Correct setting of operational limits by the operator,
prior to testing, will reduce the risk of damage to test article and system and associated
hazard to the operator.
Electrical Hazard - Disconnect the electrical power supply before removing the
covers to electrical equipment.
Disconnect equipment from the electrical power supply before removing any electrical
safety covers or replacing fuses. Do not reconnect the power source while the covers are
removed. Refit covers as soon as possible.
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